High School Competition Chemistry
Grades 9โ12Popular Chemistry Competitions
The major chemistry competitions for high school students, from the local and national Chemistry Olympiad through the International Chemistry Olympiad.
US National Chemistry Olympiad (USNCO)
The American Chemical Society's multi-tiered national competition; it begins with local exams open to all high school students and culminates in the team that represents the US at the IChO.
Visit โChemiCo
A 90-minute online chemistry competition of multiple-choice questions emphasizing core concepts.
Visit โFull List of Chemistry Competitions
A comprehensive directory of chemistry competitions across many countries.
Visit โChemagination at Princeton
Princeton ACS chemistry competition for high school students.
Visit โInternational Chemistry Olympiad (IChO)
The official International Chemistry Olympiad website.
Visit โFree Online Resources
Past exams, preparation blogs, and resource pages for students working toward the USNCO and the International Chemistry Olympiad.
USNCO Past Exams
The official ACS archive of past US National Chemistry Olympiad exams with solutions, available as PDFs.
Visit โScience Olympiad Blog for Chemistry preparation
A preparation blog with study strategies and resources for chemistry olympiad competitors.
Visit โArt of Problem Solving Chemistry Competitions
The Art of Problem Solving wiki's resource page for chemistry competition students.
Visit โIChO Past Competition Problems
Archive of past International Chemistry Olympiad competition problems.
Visit โaskIITians: Chemistry Olympiad Prep
Chemistry olympiad preparation resources and study materials.
Visit โPaid Classes
If you are looking for paid chemistry classes, here are popular programs offering olympiad training that reaches from honors and AP chemistry up to the USNCO and IChO.
Books for Competition Chemistry
College-level general chemistry texts and a dedicated olympiad problem book to build the depth needed for the USNCO and the International Chemistry Olympiad.

Chemical Principles: The Quest for Insight
A rigorous, concept-driven general chemistry text (the book cited for the JPH olympiad classes) that builds insight from atomic structure up to thermodynamics and kinetics.
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Chemical Principles
A thorough, problem-rich treatment of general chemistry that develops the deep conceptual understanding needed for olympiad-level work.
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Student Solutions Manual for Zumdahl/DeCoste's Chemical Principles, 8th
The companion solutions manual with worked answers to the Chemical Principles problems, ideal for self-study and practice.
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Theory and Problems for Chemistry Olympiad: Challenging Concepts in Chemistry
A dedicated chemistry olympiad book pairing concise theory with challenging problems and solutions across the major competition topics.
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